Custom function to plot a treemap-like diagram.

Plots an R-like treemap diagram. Plots a visual relationship of two independent categorical variables. X and Y axes show proportions of the size of the respective variables by categories. Resulting squares area can be used to compare the size of the groups in the intersection of categories. Resembles a stacked barchart, but the width of the bars shows the relative size of the x-values.

For better results, limit the number of categories to 4-5 for each of X and Y.

For a set of values:
No 3390
Yes 2971
No phone service 682
and
Yes 4171
No 2872

plots: